To AllLast week a local MZ Mastiff rider came off his machine at (thankfully) low speed. On examining the machine it was noted that the shear bolts holding the Ignition switch assembly to the steering head had loosened, and one of them had actually dropped out and jammed the steering head. I have since discovered that this is not an isolated case of loose shear bolts. I therefore strongly recommend that anyone owning a machine fitted with this type of steering lock/ignition switch make a close examination of the bolt/nut set up to check for any indications of nut/bolt loosening. This potentially lethal set up gives me serious cause for concern as in the case of an accident and without close forensic examination, the cause could be attributed to rider error. As an Engineer I find that any design that allows this to happen fundamentally (and lethally) flawed. I am not going to suggest a remedy here on this forum, but if I was to do so it may contain advice concerning the use of nylon insert nuts and threadlocking compounds.George Waite I. Eng.

Happened to my Tour, pulled top yoke off immediately, removed the offending article and replaced with SS screw,spring washer and Loctite, fixed. The Sport got the same treatment but because it had been left out in the weather by previous owner they were severely corroded in situ and required drilling out carefully. I don't know why they used the break off bolts as it is near impossble to get the screws out unless you nave a special double jointed tool.

same happend to my baggy with in warranty period,noticed the lock moved slighty when turning the key, looked a bit closer and one bolt had fallen out and other was loose,so fitted a couple of turned down allen bolts then had them replaced at service,though still kept the bolts just in case.

I found the bolts holding my Skorp Traveller ignition switch were loose when I got it a couple of months ago . They were of the " one way tighten " type of slotted screw . Luckily they were free enough to tease out with a small sharp screwdriver & were replaced with allen bolts - well tightened . Regards Bill .

Yep, both Skorps I have owned `rattled` the originals undone. Best taken out and replaced with cap heads, star washers under the heads and / or Loctite on the threads sorts it once and for all.I will add though, it sometimes takes a wee while to re-learn just where the steering lock locates IF you want to use it.The loose ignition barrel almost helps it locate and easily lock.